Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Fix jenkins-jnlp-connect.sh for missing a quotation mark"
  - Fix jenkins-jnlp-connect.sh for missing a quotation mark

    Change-Id: Iba2a7b5de9cb56c2cc6579fb9ff37b3242a0283f
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 1528f88..dc30446 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 1528f888edba45aaa9919e8c0a5af77a1801380f
+Subproject commit dc304463a3b26edb4abf24cb7292750400c42466